Rotary-engine.



G. JAGOBY.

ROTARY ENGINE.

APPLIGATION FILED JAN. 22, 1913.

1,130,168. Patented Mar. 2, 1915.

[,lllll R $511M g" Ii WITNESSES INVENTOR WW M140 1 WW BY ATTORNEY CHARLES JACOBY, OF CRGTON-ON-I-IUDSON, NEW YORK.

ROTARY ENGINE.

me ics.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed January 22, 1913. Serial No. 743,629.

To all whom it may concern Be it known that 1, CHARLES JACOBY, a citizen of the United States, and resident of Croton-on-Hudson, in the county of estchester 'and State of New York, have invented certain new and useful Improvements in Rotary Engines, of which the following is a specification.

This invention relates to rotary engines, and its object is a simple form of valve mechanism that shall be effective and durable, and in which renewals of the several parts would be easy and inexpensive.

The several objects are attained by the means set forth in this specification when taken in connection with the accompanying drawings, in which like letters and numerals refer to similar parts throughout the sevcral views.

Figure 1 shows an elevation 01 the engine in longitudinal section. Fig. 2 is a transverse elevation of the engine. Fig. 3 is a portion of the engine in section showing the eduction ports. Fig. represents the inner face of one of the heads of the engine and exhaust cams. F ig. 5 represents one of the heads of the engine provided with the induction cams.

The engine comprises, as in Fig. l, a base (Z, and a casing mounted thereon consisting oi a ring (1 upon which are secured the heads (1. a each provided with long bearings y y with stutling boxes to 20 for the shaft t. Upon the shaft is a head 0 to which are secured the disks 6 Z), which together constitute the revolving lead. The head is slotted on opposite sides for sliding plates 6 e, as in Figs. 1 and 2. The slides comprise rectangular plates, with stems z' 2' upon their inner edges. loles are bored in the head as at y' y', from the base of the slots for the slides, to the central channel u. The stems l have a two-fold purpose: they steady the plates c in their slots, and steam pressure against their inner ends is relied upon to thrust the plates outward from their slots. The ring a with the heads a a constitute a. casing in which the head revolves. The disks 6 b are provided with expansion rings 5 to closely fit and make a steam-tight joint with the ring a, shown in Figs. 1 and 3, so that the heads a a have no part in making a steam-tight joint between the heads and the steam chambers A. A but hold the ring a in place and prevent longitudinal movement of the head and the shaft.

-Within and upon opposite sides of the ring a projections 79 10 are provided, and the head 0 is fitted to revolve within the projections while the disks 6 b inclose the projections between them. The projections are provided with adjustable packing plates 7 g which can be manipulated by the screws h h. The projections are curved upon top and lower sides to meet the bore of the ring a. As will be plain in Fig. 2, as the head is revolved and the projecting plates 0 approach the curving surfaces of the projecting parts 7) the plates will be forced within their slots in the head. The plates 0 operate within the steam chambers A A that are formed between the head 0, the ring a, the disks Z) 6 and the projections 72 79 as shown in Fig. 2.

Steam induction ports to the chambers A A are made thus: The shaft upon which the revol ing head is secured, is made hollow to point central of the head, as at 7, Fit". A steam chamber a in the head, around the shaft, is connected with the bore in the shaft through perforations 0 in the shaft. Steam is admitted to the shaft through the steam inlet pipe 7. At suitable points in the head holes are bored laterally through the head for the insertion therein of sliding pins 1, as in Figs. 1 and 2, the pins constituting the induction valves of the engine. The pins, or valves as they will be termed, intersect the steam passages Z Z and close the passages, as in the lower crosssection in Fig. 2. Grooves are suitably provided in the valves, as at 2, Figs. 1 and 2-, so that the valves in one position will close the steam passages, but will open the passages when the valves are moved so as to bring the grooves therein coincident with the passages. The valves move freely, and their length is greater than the width of the head, so that when one end of either valve is flush with the side of the head, the other end of the valve will project beyond the other side of the head, the length of the distance between the head and the outer plates, as shown in Fig. 2, so that pushing the valve in one direction will close a steam passage and pushing it in the opposite direction will open a steam passage, or vice versa.

As shown in Fig. 1, the valves are both in position to admit steam past them, and they are held in such position by the cam pieces 3 3, Figs. 1 and 5, that are fast upon the heads a a While in this position it will be observed that the ends of the valves opposite I the cams project into the chamber a In the said chamber are two other cams 4, alternating With the cams 3 in the chamber 61*, shown in 1' 1g. 2 1n broken llnes, and in plan in Fig. a, and one is shown in Fig. l. T he 7 cams 8 hold the valves inposition for admit ting steam as in Fig. 1, until about three.- quarters of the length of the steam chambers are traversed by the plates 6, When. the valves Will be past the cams 3, and Will at once be engaged by the opposite came 4, Which move the valves to shut oil the steam. The steam Will then follow the plates 6 expansively to the ends of the steam chambers, Where, just before the plates 6 are to be forced inwardly by the projections 79, the plates Will pass over eduction ports m m, Figs. 2 and 3, Which constitute the exhaust ports of the engine.

In Fig. 3 the eduction ports are shown in cross-section, and also hoW the exhaust passage m are cored through the ring a and through the head a} to the inlets n n in the chamber a both steam chambers exhausting into the same chamber, from Which an exhaust pipe 8 is taken. 7

An important feature in the construction of the engine, is this: The plates 6, With their piston-stems i can be made of standard rolled steel stock, and then by adapting the 7 slots in the head, and the holes j for the standards adopted, renewals after Wear Will be easily made at a minimum of cost. The same method is applicable to the renewal of the valves.

To simplify the general description of some of the parts of the engine, the revolving element, that is, the head 0 With the disks 6 b and their attachments is designated the rotator, and the chambers 60 a as cam chambers. 7

Having described my lnventlon, What I claim and desire to secure by Letters Patent, is'

The combination in a rotary engine of a shaft, a rotator upon the shaft which comprises ahead, with disks upon the sides of the head the disks having the diameter of the part in Which the rotator revolves, the

be pushed back and forth laterally in their bearings, a casing for the rctator comprising a ring With projectlonson its inner face by means of Which the sliding plates in the I head in the rotator are actuated, heads upon the ring that support the shaft and provide cam chambers upon each side of the rotator, cams upon one of the heads for moving the valves to admit steam, and cams upon the opposite head to act upon the said valves to cut off steam, ports adjacent to the projections in the ring leading through the ring and one of the heads to oneof the cam chambers, and an exhaust connection With 7 said chamber.

Signed at Croton on Hudson, in the county of Vestchester and State of New York this 9th day of December A. D. 1912.

CHARLES JACOBY.

Witnesses Gno. WV. BARKER,

FRANK ALTZ.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

